This question already has answers here:
What is the best way to determine if a System.DateTime is midnight?
(3 answers)
Closed 17 days ago.
How can I validate if a give DateTime has actual time not just the default midnight time (00:00:00).
DateTime.TryParse("2022-11-01T14:52:17", out DateTime withTime1); // has time
DateTime.TryParse("2022-11-01T00:00:01", out DateTime withTime2); // has time
DateTime.TryParse("2022-11-01T00:00:00", out DateTime noTime ); // doesn't have time
None of what you posted are DateTime values. They are strings. I'll answer the question you actually asked though:
if (myDateTime.TimeOfDay == TimeSpan.Zero)
{
// Time is midnight.
}
else
{
// Time is not midnight.
}
From your example it depends if you want to verify that as a string or not
as a string you could do something like this
if(Datetime.toString().Split('T')[1] == "00:00:00")
return false; //"no time" per your explanation
else
return true; //time
Related
This question already has answers here:
Add hours or minutes to the current time
(4 answers)
Closed 5 years ago.
I want to add 30 minutes to my date time variable.
My code:
string time = ViewState["CloseTime"].ToString();
DateTime Closetime = DateTime.ParseExact(time, "HH:mm:ss", CultureInfo.InvariantCulture);
Here my datetime variable is Closetime. I want to add 30 minute to it. How is it possible?
Use:
DateTime currentTime = DateTime.Now;
DateTime x30MinsLater = currentTime.AddMinutes(30);
Console.WriteLine(string.Format("{0} {1}", currentTime, x30MinsLater));
Result:
4/11/2017 3:53:20 PM 4/11/2017 4:23:20 PM
Try AddMinutes(),
DateTime newDate = Closetime.AddMinutes(30);
Simply use CloseTime.AddMinutes(30);. Make sure that this results in a new DateTime object.
var newTime = CloseTime.AddMinutes(30);
To add 30 minutes to a DateTime variable, the following will work:
CloseTime = CloseTime.AddMinutes(30);
There are similar methods for adding seconds, hours, days, etc.
See here for the documentation: Methods for DateTime Struct
This question already has answers here:
How to check if a DateTime occurs today?
(12 answers)
Closed 6 years ago.
I have datetime value represented in string format like
2017-02-14 10:02
how can I check after parsing is this time is todays date?
Compare Dates only:
DateTime mydate = DateTime.Parse(...);
if (DateTime.Today == mydate.Date) {
// If parsed date (mydate) has Today's Date
...
}
Please, notice that (DateTime.Today == mydate) takes mydates time part into account and that's why will return false
You could do the following:
DateTime dt_someDate;
string s_dateString = "YYYY-MM-DD HH:mm";
if(DateTime.TryParse(s_dateString, out dt_someDate))
{
if(DateTime.Today.Date == dt_someDate.Date)
{
//the date is today;
}
}
You could also do the reverse operation - parse current date to the same format and compare the strings, but it's preferable to use the DateTime objects, in my opinion.
This question already has answers here:
Why does DateTime.Now.ToString("u") not work?
(3 answers)
Closed 5 years ago.
This is my code snippet:
public bool getEffDate()
{
testfunction(DateTime.Today.ToString("u"));
return true;
}
private bool testfunction(string modDate)
{
modDate = DateTime.Parse(modDate).ToString("yyyy-MM-dd");
return true;
}
DateTime.Today.ToString("u") - Returns current date
Whereas, modDate returns current_date - 1..
Can someone help me with the UTC date function? Why is the Parse function bringing the previous day?
This code worked for me.
modDate = DateTime.Parse(modDate, null, DateTimeStyles.AdjustToUniversal).ToString("yyyy-MM-dd");
I am assuming your timezone is Universal. You need to specify the timezone as per your requirements.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How can I get the DateTime for the start of the week?
I need to get start date of a week based on a input date and period start DayOfWeek. The week may start either from sunday or monday or etc.
//Ger start date based on a date and startdayofweek
GetStartDate(DateTime date, DayOfWeek periodStartDayOfWeek)
{
// return startdateof week
}
What about this?
while (date.DayOfWeek != periodStartDayOfWeek)
{
date = date.AddDays(-1);
}
return date;
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Calculate previous week's start and end date
I need to get the previous week start date in c#
for eg. today is Jan 9th.
previous week start date is Jan 1th.
I am using the following code
DayOfWeek weekStart = DayOfWeek.Sunday;
DateTime startingDate = DateTime.Today;
while (startingDate.DayOfWeek != weekStart)
startingDate = startingDate.AddDays(-1);
DateTime previousWeekStart = startingDate.AddDays(-7);
Is this the best way in c#
Thanks
As previously stated the duplicate's response will probably do for you
mondayOfLastWeek = DateTime.Now.AddDays( -(int)DateTime.Now.DayOfWeek - 6 );
sundayOfLastWeek = DateTime.Now.AddDays(-(int)DateTime.Now.DayOfWeek)
Try:
DateTime.Today.AddDays(-7);